javascript - Rendering in backbone error -

i'm trying render don't know javascript , compare error: uncaught referenceerror: wrapper not defined. render result of collection's fetch in same view.

     var homeview = backbone.view.extend({   template: handlebars.compile(template),   events: {     },    initialize: function() {        console.log("inhomeview");        var amici = new usercollection();       amici.fetch({       success: function() {       amici.each(function(object) {        console.log(object.tojson());       var wrapper=object.tojson();        });    },     error: function(amici, error) {     // collection not retrieved.    }        });         this.render();    },     render: function() {        var context=wrapper;       var html =this.template(context);         this.$el.html(html);        return this;      }         });      return homeview;        });     

perhaps want similar (please read comments in code below):

var homeview = backbone.view.extend({    template: handlebars.compile(template),    initialize: function() {     // better pass collection view , listen 'reset' event     this.collection.on('reset', this.render, this)   },    render: function() {     // convert collection json , pass template "users"     var html = this.template({users: this.collection.tojson()});     this.$el.html(html);     return this;   }  });  // how should using later in code: // create collection , pass in home view var users = new usercollection(),     homeview = new homeview({collection: users,                              el: '#pagina'}); // fetch collection, trigger 'reset' event // view render users.fetch();